Liquid ejection head and liquid ejection apparatus

A liquid ejection head comprising:

• a first pressure chamber row in which a plurality of first pressure chambers communicating with ejection orifices that eject liquid are arranged along a predetermined direction;
• a second pressure chamber row in which a plurality of second pressure chambers communicating with ejection orifices that eject liquid are arranged along the predetermined direction;
• a first flow path for supplying the liquid to the plurality of first pressure chambers;
• and
• a second flow path for recovering the liquid from the plurality of second pressure chambers,
• wherein a part of the first pressure chamber row is disposed to overlap the first flow path, as viewed from an ejection direction of the liquid,
• a part of the second pressure chamber row is disposed to overlap the second flow path,
• the first flow path and the second flow path respectively comprise a plurality of linear flow paths along the predetermined direction,
• the plurality of first flow paths and the plurality of second flow paths are disposed alternately along a crossing direction crossing the predetermined direction,
• a supply flow path formed in a linear shape supplies liquid to the plurality of first flow paths,
• a recovery flow path formed in a linear shape recovers liquid from the plurality of second flow paths,
• the supply flow path is disposed along the crossing direction, and communicates with the plurality of first flow paths at first end sides of the first flow paths, and
• the recovery flow path is disposed along the crossing direction, and communicates with the plurality of second flow paths at second end sides of the first flow paths.

A liquid ejection head comprising:

• a first pressure chamber row in which a plurality of first pressure chambers communicating with ejection orifices that eject liquid are arranged along a predetermined direction;
• a second pressure chamber row in which a plurality of second pressure chambers communicating with ejection orifices that eject liquid are arranged along the predetermined direction;
• a first flow path for supplying the liquid to the plurality of first pressure chambers;
• and
• a second flow path for recovering the liquid from the plurality of second pressure chambers,
• wherein a part of the first pressure chamber row is disposed to overlap the first flow path, as viewed from an ejection direction of the liquid,
• a part of the second pressure chamber row is disposed to overlap the second flow path,
• the plurality of first pressure chambers are connected to the second flow path,
• the plurality of second pressure chambers are connected to the first flow path, and
• in a crossing direction crossing the predetermined direction, first sides of the plurality of first pressure chambers are connected to the first flow path while second sides are connected to the second flow path, and first sides of the plurality of second pressure chambers are connected to the second flow path while second sides are connected to the first flow path.

A liquid ejection head comprising:

• a first pressure chamber row in which a plurality of first pressure chambers communicating with ejection orifices that eject liquid are arranged along a predetermined direction;
• a second pressure chamber row in which a plurality of second pressure chambers communicating with ejection orifices that eject liquid are arranged along the predetermined direction;
• a first flow path for supplying the liquid to the plurality of first pressure chambers;
• and
• a second flow path for recovering the liquid from the plurality of second pressure chambers,
• wherein a part of the first pressure chamber row is disposed to overlap the first flow path, as viewed from an ejection direction of the liquid,
• a part of the second pressure chamber row is disposed to overlap the second flow path,
• the plurality of first pressure chambers are connected to the second flow path,
• the plurality of second pressure chambers are connected to the first flow path, and
• a flow resistance of a flow path from the first flow path to the second flow path through the first pressure chambers and a flow resistance of a flow path from the first flow path to the second flow path through the second pressure chambers are made same.